Subtasks and Notes Disappear!

I live in Bangkok and am visiting home in Hong Kong. I bought two local SIMs for both my iPhone and iPad. Last night, I downloaded the Toodledo update on my iPad.

Don't know if it has anything to do with anything from the above- I have lost like all the subtasks and notes that came with them (the ones I input in Bangkok). The parent task is there but it appears only as a normal task with no subtasks.

Strangely, a subtask I added after I arrived in HK is still here, and it listed the parent task. But when I click the parent task, again it shows zero subtasks.

I already checked the recent lists and the all tasks list but nothing related was there- any help to recover the data?